Oppo EncoX2 - Charging; Specifications

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Charging
Battery level
• When your earbuds are in the charging case, the indicator shows the battery level of your earbuds. When your
earbuds are not in the case, the indicator shows the battery level of the case.
• Different indicator colors are used to show the battery level. Specifically, red indicates low, yellow indicates
medium, and green indicates full.
Charging your earbuds
Place your earbuds into the charging case to start charging them. The indicator shows the battery level of the
earbuds.
Charging the case
The indicator shows the charging status when you are charging your case. Yellow indicates it is charging and green
indicates it is fully charged.
• Wired charging
Use the USB-C charging cable included to charge the case.
• Wireless charging
Use a Qi-certified charging pad to charge the case. Make sure the front side of the case faces upward during
wireless charging. A phone that supports reverse wireless charging can also be used to charge the case.
※ All these specifications are based on tests performed by OPPO laboratories. The battery capacity, audio playtime, and charging time were tested
by OPPO laboratories at an ambient temperature of 25°C using an OPPO standard charger. The actual results may differ slightly based on
real-world factors and the charger used.
※ This guide is provided for reference only. Please refer to the actual product for its final functions and features.
Specifications
• Model: ETI51
• Charging case model: ETI52
• Driver: 11 mm dynamic driver and 6 mm Balanced
Membrane Driver
• Frequency response range: 20 Hz ~ 20 kHz
• Microphone sensitivity: -38 dBV/Pa
• Bluetooth codec: LHDC/AAC/SBC
• Bluetooth version: 5.2
• Bluetooth range: 10 m
• Battery type: Rechargeable Li-ion Polymer Battery
• Battery capacity:
44 mAh (Earbuds) / 535 mAh (Charging Case)
• Playtime (50% volume)*:
Max noise cancellation: 4 hours (single charge);
20 hours with charging case
Noise cancellation off: 5.5 hours (single charge);
25 hours with charging case
• Charging time (wired charging) *:
80 min (Earbuds) / 110 min (Earbuds+Charging Case)
• Charging input (charging case): 5 V 1 A